METHOD FOR MAKING BUILDUP PRODUCTS Russian patent published in 2003 - IPC

FIELD: powder metallurgy, namely processes for making buildup complex-shape articles including parts of powder material. SUBSTANCE: method comprises steps of separately pressing parts of refractory-component charge including easy-to-melt component or its alloy in quantity exceeding maximally permissible solubility of easy-to-melt component in material of part; subsequent assembling and sintering; pressing parts at providing non-uniform porosity; at sintering providing gradient of capillary forces of undissolved easy-to-melt component directed to joining zone; assembling by means of diffusion sintering while applying outer load for loaded articles or without application of outer load for low-load articles. EFFECT: lowered cost for making sintered buildup complex-shape powdered articles. 2 cl, 2 dwg